Portable grill casing



FIG. 1 is a front, top and right perspective view of a portable grill casing showing the new design;

FIG. 2 is a front elevation view of the portable grill casing of FIG. 1;

FIG. 3 is a back elevation view of the portable grill casing of FIG. 1;

FIG. 4 is a top plan view of the portable grill casing of FIG. 1;

FIG. 5 is a bottom plan view of the portable grill casing of FIG. 1;

FIG. 6 is a left side elevation view of the portable grill casing of FIG. 1; and,

FIG. 7 is a right side elevation view of the portable grill casing of FIG. 1.

The broken lines illustrate portions of the portable grill casing that form no part of the claimed design. 

CLAIM The ornamental design for a portable grill casing, as shown and described. 